isrstealer | e93c62f6504891ddf042b0a0509e5107fb1227a76f9c98bf829b84980c34044b

General

Target

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe
Size

521KB
MD5

34c4d20e314fd1d4e7ceb709e4aae5fc
SHA1

d9cdd195c35c424e4fa209e3a6a3563fcff25aef
SHA256

e93c62f6504891ddf042b0a0509e5107fb1227a76f9c98bf829b84980c34044b
SHA512

c07731c7a8bafdeb4710971146c8f8983d411971ef01d077ee1dd9f1f95a91fae38337964b935a8d88ca104fdc259048b427b58a0d96ec2e687a84d6abc2cef9
SSDEEP

6144:aT5OEpgULTc0J36XgbQpV8TniqCy759sXokF2fn5aHBca87QZbEI7fLZAmq:kEEpBu/K59gokF2fXE7+

Score

10^/10

isrstealer discovery spyware stealer trojan

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3060-13-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3060-10-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3060-20-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3060-21-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid	Process
3060	svchost.exe

Loads dropped DLL 1 IoCs

Processes:

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe

pid	Process
2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 1 IoCs

Processes:

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2336 set thread context of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

svchost.exe

pid	Process
3060	svchost.exe
3060	svchost.exe
3060	svchost.exe
3060	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid	Process
3060	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2336 wrote to memory of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30
PID 2336 wrote to memory of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30
PID 2336 wrote to memory of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30
PID 2336 wrote to memory of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30
PID 2336 wrote to memory of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30
PID 2336 wrote to memory of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30
PID 2336 wrote to memory of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30
PID 2336 wrote to memory of 3060	2336	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
memory/2336-0-0x0000000074601000-0x0000000074602000-memory.dmp

Filesize
4KB

Download
memory/2336-1-0x0000000074600000-0x0000000074BAB000-memory.dmp

Filesize
5.7MB

Download
memory/2336-16-0x0000000074600000-0x0000000074BAB000-memory.dmp

Filesize
5.7MB

Download
memory/2336-23-0x0000000074600000-0x0000000074BAB000-memory.dmp

Filesize
5.7MB

Download
memory/3060-13-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3060-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3060-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3060-8-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3060-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3060-20-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3060-21-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads